243113315225 has 24 divisors (see below), whose sum is σ = 329747829312.
Its totient is φ = 176335588800.
The previous prime is 243113315201. The next prime is 243113315231. The reversal of 243113315225 is 522513311342.
It is a de Polignac number, because none of the positive numbers 2k-243113315225 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 243113315191 and 243113315200.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1082477 + ... + 1287626.
It is an arithmetic number, because the mean of its divisors is an integer number (13739492888).
Almost surely, 2243113315225 is an apocalyptic number.
243113315225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.
It is an amenable number.
243113315225 is a deficient number, since it is larger than the sum of its proper divisors (86634514087).
243113315225 is a wasteful number, since it uses less digits than its factorization.
243113315225 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2370497 (or 2370492 counting only the distinct ones).
The product of its digits is 21600, while the sum is 32.
Adding to 243113315225 its reverse (522513311342), we get a palindrome (765626626567).
The spelling of 243113315225 in words is "two hundred forty-three billion, one hundred thirteen million, three hundred fifteen thousand, two hundred twenty-five".